Tires contain stearic acid which can be taken from animal products, this component helps the rubber in tires hold shape under steady surface friction.
A member of Vegan Fitness forum took the time to call some tire manufacturers and made a handy list of companies that use plant-based alternatives of the component.
What was found is that "Michelin tires" have no animal derived products. The Stearic Acid used in their tires is derived from Vegetable/food grade product.
Veganism is a way of living which seeks to exclude, as far as is possible and practicable, all forms of exploitation of, and cruelty to, animals for food, clothing or any other purpose. Learn all about veganism from The Vegan Society.
Check out 9 everyday products you didn't know had animal ingredients compiled by TreeHugger.
Switching to a Vegan Diet? Learn 12 Things You Need to Know Before Going Vegan, shared by Health.com.